Rockets exec Rosas to become Mavs GM

Gersson Rosas, who rose from a Rockets intern to executive vice president with a key role in reshaping the roster, will become general manager of the Dallas Mavericks, a person with knowledge of the agreement said.

Rosas’ departure will be the third major change in the Rockets’ front office since last season. Sam Hinkie, formerly the Rockets’ executive vice president of basketball operations, became the general manager of the Philadelphia 76ers, and Arturas Karnisovas, formerly the Rockets’ director of scouting, became the assistant general manager of the Denver Nuggets.

Rosas, who like Hinkie joined the Rockets prior to general manager Daryl Morey’s seven seasons with the team, also had been the general manager of the Rio Grande Valley Vipers, the team’s NBA Development League affiliate. The Vipers have won two championships and reached a third finals since Rosas became general manager in 2009-10 and was named the league’s development champion last season.

Rosas, 35, who moved to the basketball operations side as video coordinator, was central to the Rockets’ scouting and personnel decisions, bringing a mix of a scouting background and an aptitude for the organization’s use of analytics.